pscnv/pscnv_vm.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2010 PathScale Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef __PSCNV_VM_H__
  28 #define __PSCNV_VM_H__
  29
  30 struct pscnv_bo;
  31 struct pscnv_chan;
  32
  33 struct pscnv_vspace {
  34         int vid;
  35         struct drm_device *dev;
  36         struct mutex lock;
  37         struct pscnv_mm *mm;
  38         struct drm_file *filp;
  39         struct kref ref;
  40         uint64_t size;
  41         uint32_t flags;
  42         void *engdata;
  43 };
  44
  45 struct pscnv_vm_engine {
  46         void (*takedown) (struct drm_device *dev);
  47         int (*do_vspace_new) (struct pscnv_vspace *vs);
  48         void (*do_vspace_free) (struct pscnv_vspace *vs);
  49         int (*place_map) (struct pscnv_vspace *, struct pscnv_bo *, uint64_t start, uint64_t end, int back, struct pscnv_mm_node **res);
  50         int (*do_map) (struct pscnv_vspace *vs, struct pscnv_bo *bo, uint64_t offset);
  51         int (*do_unmap) (struct pscnv_vspace *vs, uint64_t offset, uint64_t length);
  52         int (*map_user) (struct pscnv_bo *);
  53         int (*map_kernel) (struct pscnv_bo *);
  54         void (*bar_flush) (struct drm_device *dev);
  55         struct pscnv_vspace *fake_vspaces[4];
  56         struct pscnv_vspace *vspaces[128];
  57         spinlock_t vs_lock;
  58 };
  59
  60 extern struct pscnv_vspace *pscnv_vspace_new(struct drm_device *, uint64_t size, uint32_t flags, int fake);
  61 extern int pscnv_vspace_map(struct pscnv_vspace *, struct pscnv_bo *, uint64_t start, uint64_t end, int back, struct pscnv_mm_node **res);
  62 extern int pscnv_vspace_unmap(struct pscnv_vspace *, uint64_t start);
  63 extern int pscnv_vspace_unmap_node(struct pscnv_mm_node *node);
  64
  65 extern void pscnv_vspace_ref_free(struct kref *ref);
  66
  67 static inline void pscnv_vspace_ref(struct pscnv_vspace *vs) {
  68         kref_get(&vs->ref);
  69 }
  70
  71 static inline void pscnv_vspace_unref(struct pscnv_vspace *vs) {
  72         kref_put(&vs->ref, pscnv_vspace_ref_free);
  73 }
  74
  75 extern int pscnv_mmap(struct file *filp, struct vm_area_struct *vma);
  76
  77
  78 int nv50_vm_init(struct drm_device *dev);
  79 int nvc0_vm_init(struct drm_device *dev);
  80 void nv84_vm_bar_flush(struct drm_device *dev);
  81
  82 #endif